[Keyboard] New Keyboard: MK60 (#5327)

* intial commit

* fix up some of the cookie cutter code

* define pins used and size of switch matrix

* enable lighting settings and bootmagic lite

* create the appropriate LAYOUT macro

* remove a comma for compilation errors

* provide a suitable keymap

* disable console and command due to firmware being too large

* add Caps Lock LED support

* Add QMK Configurator support

* fix markdown rendering

* fix mechmerlin to mechkeys

keyboards/mechkeys/mk60/keymaps/default/config.h

@@ -0,0 +1,19 @@
+/* Copyright 2019 MechMerlin
+ *
+ * This program is free software: you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License as published by
+ * the Free Software Foundation, either version 2 of the License, or
+ * (at your option) any later version.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ * GNU General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program.  If not, see <http://www.gnu.org/licenses/>.
+ */
+
+#pragma once
+
+// place overrides here